Magnetic separator.



G. ULLRICH.

MAGNETIC SEPARATOR.

APPLIOATION FILM) JULYs, 191s. RBNEWBD 11111.21, 191e.

1,129,822. Patented Feb. 23, 1915 ffl/111111111111110 UNITED STATES OFFICE.

GEORG ULLRICH, OF MAGDEBURG, GERMANY, ASSIGNOR TO FRIED. KRUPP AKTIEN'- GESELLSCLAFT, GRUSONWERK, OF MAGDEBURG-BUCKAU, GERMANY, A JOINT- STOCK COMPANY.

MAGNETIC SEPARATOR.

Patented Feb. 23, 1915.-

Application led July 3, 1913, Serial No. 7??,217. Renewed January 21, 1915. Serial No. 3,631.

T0 all whom it may conce-m:

Be it known that I, GEORG ULLurcH, a subject of the King of Bavaria, and resident of Magdeburg, German Empire', have invented certain and useful Improvements Relating to Magnetic Separators, ofwhich the following is a specification.

This invention relates to magnetic separators and has particular reference to separators of the kind in which the material to be treated is made to travel in a longitudinal direction between the surface of a magnet pole and a horizontally rotatable cylinder serving as armature thereto, the said c linder being composed of annular or disks 1aped bodies which are axially adjustable BpQnthe cylinder shaft and are preferably tapered at-their peripheries. In this form of apparatus the strength of the magnetic field extending across each disk o r group of disks between upper and lower poles has been rendered capable of regulation by using interchangeable or adjustable magnet pole pieces beneath the cylinder. It would be much more advantageous to be able to ell'ect the regulation of the magnetic ield strength from above, but hitherto such regulation has necessitated a changing of the disks or of equivalent ring-shaped members, which is inconvenient. A The chief object of the present invention is to provide a magnetic separatorfof the horizontal rotating cylinder type in which j the adjustment of the magnetic field strength at different parts can be readily effected without involving any changingl of .parts ot' lthe separator. Y

According to the present invention the magnetic separator comprises a horizontally 'rotatable cylinder composed of annular or disk-shaped bodies, and a lower pole having a longitudinally inclined surface or npper face, the said pole and the disks heilig adapted for longitudinal adjustment rela- Consequently with any, even the slightest, displacement of any one of the disks, the distanceseparating its sharp edge from the surface of the lower .pole is altered, with the result that the strength of the corresponding zone is modified also.

One embodiment of the invention is illustrated by way of example in the accompanying drawlng, in which Figure 1 is a longitudinal section through a cylinder separator constructed in accordance with the invention, and Fig. 2 is a cross section on the line A-B of Fig. 1. Figs. 3 and 4, show, in longitudinal section, two modifications of Fig. 1.

The separator illustrated is one with two magnetic fields, Aone field extending between the cylinder and an upper pole, and the other between the said cylinder and a lower pole. It will of course be understood that the invention can also be applied to separators with only one magnetic field and also to those with more than two such fields.

is the upper pole and b the lower pole of each magnetic field; between these poles the cylinder rotates; this cylinder is composed of annular or disk-shaped bodies e displaceably secured to a hub e mounted on the shaft d. In the example illustrated in Fig. l, the disks o are internally threaded, and the hub e is externally threaded, but adjustability can be provided for in other ways. The surface or upper face of the lower pole b is common to the disks and 'lies obliquely to the axis of the cylinder. It

is not necessary that it should present a Vplane surface as in the example illustrated axis o the cylinder, in order to permit of modifying the inclination ofthe surface of the pole as desired, and also to permit of effecting 'adjustment of the magnetic zones from below by ,means of set screws j if desired, instead of at the cylinder, for example for line adjustment during operation. The upper pole may also be divided into lamellen a3, having' individual set screws Ic to permit of regulating the pull exerted by the lower pole upon the interveningl cylinder. In some cases it might be preferable to` construct the lower pole as a solid block b which is displaccable longitudinally, parallcl to the axis of the shaft d, by means of a set screw l, see Fig. 4.

An inclined table f is arranged above each hall of the lower pole b and the material t0 be separated is delivered to these table-s at g. The magnetic material. is attracted into the several annular magnetic zones onto4 the sharp edges of the disk c, and' by the rotation Aof the cylinder it is conducted by the disks out of the magnetic icld. Thel ma- .'wrial then falls from the disks -or is removed mechanically. The non magnetic material slides down the tables into a chute the separator can be modified as. desired provided that the result is attained that by relative axial displacement between the lowerpole and the cylinder disks, either individuall or collectively, and a modificationfof the strength of field in the several magnetic zones is brought about. For example instead of adjusting the disks on the cylinder, the inclined surface d of the lower pole might Well be displaced, and the cylinder be stationary, or both might be displaced. y c

Having now particularly described and ascertained the nature of my said invention and inV what manner the same is to be p'erformed, Ideclare that` what I claim is 1. A magnetic separator having a. horizontal rotatable cylinder, an underlying ma et ole,'disks serving as armature to sai' feeding'the material between the cylinder and tli'epole face, the magnet pole being formed with a longitudinally inclined surface or upper face, means for longitudinal adjustment of the pole and the disks, relativel for t e purposes specified.I

2. A magnetic separator comprising a longitudinal 'extending horizontal shaft carrying 'dislfs thereon axially -adjustable individually'jand collectively and tapered at their peripheries, an underlying'magnet pole having a longitudinally inclined surace;4 or upp'era face, and means whereby the material t91-beseparated is conductedlongitudinallyfbetween the magnet pole and the isks, subst ptially as andfor the purpose specified;

3. A maga tic separator having' a horizontal rota able cylinder, an underlying magnet pole, disks with graded diameters serving as armature to said underlying magnet pole, means 'for feeding the material between the cylinder and the ole face, the magnet (pole being composed o transversely arrange lamellae oppositely graded to said disks and capable of individual adjustment (rlelnitively to the periphery ofthe cylinder tal'rotatab e cyli un erlying magnet pole, means for,-

to one another, substantially as and 4. A magnetic separator having a horizontal rotatab e cylinder, an underlying magnet pole, disks serving as armature to said pole, means for feeding the material between the cylinder and the pole face, said magnet pole havin inclined surfaces in the axial direction o the c linder, means for adjustingthe pole perpen icularly relative 'to theA axes of the disks. l

5. A magnetic separator having a horizontal rotatable cylinder, an underlying magnet pole, disks serving as armature to said pole, means for'feeding the material between the cylinder and the pole face, said magnet pole having graded inclined surfaces in the axial direction of the cylinder, means for adjusting the pole. perpendicularly relative to the axes of the disks.

6. A magnetic separator having a liori- .zontal rotatable cylinder, an upper and a lower pole, disks serving as amature to said poles, means for feedin the material between the cylinder and t e lower pole `face in the direction of the axes of the disks,

said poles being composed of lamell ranged transverse? :xs-regards the line of fee throu h the eld and capable of rectilinear, in ividual adjustment relativfa .said cylinder disks.

etic sep'arator havingl a' horizonn er, an upper anda lower pole, disks serving armature to said poles,

7., A. ma

means for feedin e material between the cylinder and the er ole 'faceinthe direction of thek axes of t e disks, said poles being composed of lamell arran edtrans versely as re ards the linel Ofj-fec tlii't'm the field an capable of rectilinear, in ividual adjustment relative to said cylinder disks, each of said 'lamell having inclined surfaces facing said cylinder.` 8` A ma eticse arator havingva horizontal rotatab e cylindlr; an upper and 'a' lower pole, disks serving as amature to said poles, means for feeding the material between the cylinder and the lower pole facc,'said disks being of different diameters and arranged so that their peripheries coincide with the outer surfaces ofa cone and the surfaces of said poles forming inclined steps approximately following the inclination of said cone, the direction of the feed .of material taking placejn the direction of the axis of the cylinder'. i p c The foregoing specification signed at Magdeburg, this 14th day of June, 1913.

GEORG ULLRICH.

In the presence of two witnesses- WILHELM Fuziscnriacx, HERMANN HEPHANO. 

